Improvement in said-pumps foe oil-wells



lntrl tats strnt @ffice JOHN F. GARLL, OF BIi'.OOKLYN,V NEW YORK.

Letters Patent No. 73,577, dated.tanttary 21, 1868.

IMPR'OVBMENT IN SAND-PUMPS FOR OIL-WELLS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN F CARLI., of Brooklyn, in the county of Kings, 'and State of New York, have invented a new and improved Sand-Pump for Oil-Wells; and I do hereby declaro that the following is a full, clear, and exact description thereof, which will enable others skilled inthe art to mak-e and use the same, reference being had to the accompanying drawings, and to the letters of referencevmarked thereon.

This invention relates to a new and improved sand-pump for oil-wells, in which the water'and debris or sand in said wells is forced into the pump-cylinder through the`,mediun1 of Astatic pressure, as hereinafter fully shown and described. In the accompanying drawings- I .Figure 1 represents a longitudinal central section of my invention.

Figure 2, a horizontal section of the same.

The pump-cylinder is composed of two parts, A B, connected together by a screw-coupling, C, the upper edge of which serves as a seat for a valve, D, which works in the upper part A of the cylinder, similar to a piston or plunger. E represents a. cap which is screwed` into the upper end of A, is perfectly tight or close at its outer or upper end, and is provided with a socket, a, at its apex, having an internal screw to receive a screw which joins it to the auger-stem. The cap and screw, it will be seen, serve as a connection between' the pump and the auger-stem. In the upper part A of the pump-cylinder, there is placed a valve, F, vopening outward, the valve-stem having a spiral spring, b, upon it, which has a tendency to keep the valve closed. This valve is a safety-one, and is designed to prevent .an undue pressure of air in A. The valve D is screwed or otherwise fitted on the upper end of a stem, G, the latter extending down into a tube, I-I, which passes through xt pendcnt yoke, I, attached to the screw-coupling C. The tube H has an oblong slot, e, made through it, and through this slot and the valve-stem Gr, a pin, cl, passes, the latter being allowed to pass through the yoke in -consequence of the latter being provided with a slot, f, at each side of the hole, throughwhich the tube `H passes.' These slotsff'are indicated by the dotted lines in the drawing. The tube Hhas u pin, g, projecting laterally from it, which works in an oblique slot, e, in the yoke I. This Apin gand the oblique slot e serve, when the tube H is drawn down, to turn the pin o? so that it will be, when below the yoke I, out of line with the slots ff,'and retain the valve D down upon its seat. In the bottom of the lowcr'partB `of the pump-cylinder there is placed a Hap-valve, J, opening-upward. When the pump is let down intothe well,v the valve D is held down upon its seat C, in consequence of the pin d, which passes through thev stem G, being out of line with the slotsff. The tube H, as the pump is let down, extends below the bottom of the pump-cylinder, keeping the valve .I open. The water enters the lower part B of the pump-cylinder, compressing the air therein, the valve D being kept closed by the means previously stated. When the pump nearly arrives at the bottom of the well the tube H comes in contact with the bottom, Vand the-pump-cylinder descending, the valvestern G is turned in consequenceof the obliqueslot e acting upon the pin g, and this turning of the valve-stem brings the pin d in line with the slots ffin the yoke I, and the-valve D is thereby-liberated, and is instantly forcedupward under` static pressure, the air in A above the valve D being compressed, and the water rushing into-the lower end of B, carrying the debris with it. The tube Hf'is also drawn within the lower part B of the pumpcylinder,`and above valve J, which instantly closes, when H. passes above it, owing to the reaction of the compressed air in A, and the pump and its contents are then drawn up. This pumping or cleaning of the Well is performed at one operation, nnd the operation is perfect.

The invention possesses several advantages: First. It is cheaper. pulley, dto.

Being used lon the drilling-tools, it saves the expense of a sand-pump rope, frictiom Second. It operates more expeditiously than an ordinary sand-pump, all churning being avoided, the 'pump-cylinder filling instantly when it touches the bottoni of the wcll.

Third. Itis safer, being less liable tostick in the hole, und if it should stick, it can be readily loosened-0n account of having the cable and tools to loosen it with.

Fourth. It is more effectual, for being closed at both ends, it'displaces nearly all the sediment at the bottom of the well, and forces it up around `the outside of the pump, and when the valveopens, this sediment is instantly forced down under the bottom of the pump and into the s ame, owing to the weight of water above, the motion being so quick and the force so great, that the bottom of the well is swept clean in an instant.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- 1. A. sand-pump provided with valves D J, and their connecting agencies, arranged in suoli a manner that the valves will be operated automatically, and the pump filled with sand or debris under tbe static pressure of the water within the well or hole, .substantially as herein shown'aml described.

2. The valve-stem G, with the tube- H, yoke I, oblique slot e, piu g, and the slots ff. all arranged to operate in connection with the-valve J, substantially as and for tbe purpose specified.

The Vsafety-valve F,V arranged irrrelation to the valves D J, applied to the cylinder of a sand-pump, to operate in the manner substantially as and for the purpose set forth. v Y

. JOHN F. CARLL.

Witnesses:

J. R. NESBITT, LA. C. GARDNER. 

